What is the solution of this linear system?

3x + 5y = -1
2x − 5y = 16

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

Will gve pints stars and brainliest